What is ANL Fuse?
ANL fuse is a high current circuit protection device designed specifically for applications that require
robust and reliable overcurrent protection. These fuses are commonly used in environments such as
forklifts, ship systems, aviation, and battery charging devices, where high-power loads require quick
protection. The characteristic of ANL fuse is its rectangular shape factor, with dimensions of (22x81mm)
and thickness varying according to its rated current. The main conventional materials are zinc alloy and
copper alloy
These fuses work by interrupting excessive current almost instantaneously, preventing damage to
equipment or wiring. For example, in automotive applications, ANL fuses are typically used to protect
high-power accessories such as audio systems or dual battery settings. When installing auxiliary batteries
in vehicles to support high wattage audio systems, ANL fuses are typically placed at both ends of the
cable connecting the front and rear batteries. This ensures that the entire cable line will not experience
short circuits or overloads.
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What Is ANL Fuse?
An ANL fuse is a bolt-down type high-current DC fuse designed for heavy-duty battery-powered and high-power electrical systems. It features a rectangular body with two bolt terminals, optimized for high current, high vibration, and reliable circuit protection.
Core Specifications
- Current Rating: 35A–750A
- Voltage Rating: Up to 80V DC
- Breaking Capacity: 2,700A–6,000A
- Mounting: M6/M8 bolt-down (standard spacing 60mm)
- Body Size: 22mm × 81mm
- Certifications: UL248-1, SAE J1171, RoHS
Key Features
- ✅ High current handling: Safely supports up to 750A DC for heavy loads
- ✅ Fast-acting: Quickly cuts short circuits to protect batteries and wiring
- ✅ Vibration resistance: Bolted design prevents loosening in automotive/marine environments
- ✅ Visible indicator: Transparent window to check blown status easily
- ✅ Low contact resistance: Silver-plated terminals reduce heat generation
Common Applications
- Automotive: High-power audio, dual-battery systems, EV/HEV auxiliary circuits
- Marine: Boat battery banks, inverters, winches, ignition-protected circuits
- Solar & Energy Storage: PV combiner boxes, battery energy storage systems (BESS)
- Industrial: Forklifts, pallet jacks, heavy-duty machinery, 24V/48V/58V DC systems
ANL vs. MIDI vs. MEGA Fuse
- ANL Fuse: 35–750A, 80V DC, standard bolt-down
- MIDI Fuse: 30–200A, compact, lower profile
- MEGA Fuse: 200–500A, larger size, higher voltage
FAQ
Q: What is an ANL fuse used for?
A: A bolt-down high-current DC fuse for protecting high-power circuits in automotive, marine, solar, and battery systems (35–750A, up to 80V DC).
Q: What’s the difference between ANL and MIDI fuse?
A: ANL handles higher current (up to 750A) with a larger body; MIDI is compact for 30–200A applications.
Q: Can ANL fuses be used for solar systems?
A: Yes, ideal for solar battery banks, inverters, and charge controllers in 12–80V DC system